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46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef Patternist_BooleanFNs_H
53 #define Patternist_BooleanFNs_H
55 #include <private/qfunctioncall_p.h>
59 * @short Contains classes implementing the functions found in
60 * <a href="http://www.w3.org/TR/xpath-functions/#boolean-functions">XQuery 1.0 and
61 * XPath 2.0 Functions and Operators, 9 Functions and Operators on Boolean Values</a>.
63 * @ingroup Patternist_functions
74 * @short Implements the function <tt>fn:true()</tt>.
76 * The implementation always rewrites itself to a boolean value at compile time.
78 * @ingroup Patternist_functions
79 * @author Frans Englich <frans.englich@nokia.com>
81 class TrueFN : public FunctionCall
84 virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
88 * @short Implements the function <tt>fn:false()</tt>.
90 * The implementation always rewrites itself to a boolean value at compile time.
92 * @ingroup Patternist_functions
93 * @author Frans Englich <frans.englich@nokia.com>
95 class FalseFN : public FunctionCall
98 virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
102 * @short Implements the function <tt>fn:not()</tt>.
104 * @ingroup Patternist_functions
105 * @author Frans Englich <frans.englich@nokia.com>
107 class NotFN : public FunctionCall
110 virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
111 virtual QList<QExplicitlySharedDataPointer<OptimizationPass> > optimizationPasses() const;